diff --git a/api/core/app/apps/advanced_chat/app_generator_tts_publisher.py b/api/core/app/apps/advanced_chat/app_generator_tts_publisher.py
index a506447671..4e6422e2df 100644
--- a/api/core/app/apps/advanced_chat/app_generator_tts_publisher.py
+++ b/api/core/app/apps/advanced_chat/app_generator_tts_publisher.py
@@ -56,7 +56,7 @@ def _process_future(
 
 
 class AppGeneratorTTSPublisher:
-    def __init__(self, tenant_id: str, voice: str):
+    def __init__(self, tenant_id: str, voice: str, language: Optional[str] = None):
         self.logger = logging.getLogger(__name__)
         self.tenant_id = tenant_id
         self.msg_text = ""
@@ -67,7 +67,7 @@ class AppGeneratorTTSPublisher:
         self.model_instance = self.model_manager.get_default_model_instance(
             tenant_id=self.tenant_id, model_type=ModelType.TTS
         )
-        self.voices = self.model_instance.get_tts_voices()
+        self.voices = self.model_instance.get_tts_voices(language=language)
         values = [voice.get("value") for voice in self.voices]
         self.voice = voice
         if not voice or voice not in values:
diff --git a/api/core/app/apps/advanced_chat/generate_task_pipeline.py b/api/core/app/apps/advanced_chat/generate_task_pipeline.py
index ed936643dd..6032a820cb 100644
--- a/api/core/app/apps/advanced_chat/generate_task_pipeline.py
+++ b/api/core/app/apps/advanced_chat/generate_task_pipeline.py
@@ -225,7 +225,9 @@ class AdvancedChatAppGenerateTaskPipeline(BasedGenerateTaskPipeline, WorkflowCyc
             and features_dict["text_to_speech"].get("enabled")
             and features_dict["text_to_speech"].get("autoPlay") == "enabled"
         ):
-            tts_publisher = AppGeneratorTTSPublisher(tenant_id, features_dict["text_to_speech"].get("voice"))
+            tts_publisher = AppGeneratorTTSPublisher(
+                tenant_id, features_dict["text_to_speech"].get("voice"), features_dict["text_to_speech"].get("language")
+            )
 
         for response in self._process_stream_response(tts_publisher=tts_publisher, trace_manager=trace_manager):
             while True:
diff --git a/api/core/app/apps/workflow/generate_task_pipeline.py b/api/core/app/apps/workflow/generate_task_pipeline.py
index df48a83316..9820cb388f 100644
--- a/api/core/app/apps/workflow/generate_task_pipeline.py
+++ b/api/core/app/apps/workflow/generate_task_pipeline.py
@@ -194,7 +194,9 @@ class WorkflowAppGenerateTaskPipeline(BasedGenerateTaskPipeline, WorkflowCycleMa
             and features_dict["text_to_speech"].get("enabled")
             and features_dict["text_to_speech"].get("autoPlay") == "enabled"
         ):
-            tts_publisher = AppGeneratorTTSPublisher(tenant_id, features_dict["text_to_speech"].get("voice"))
+            tts_publisher = AppGeneratorTTSPublisher(
+                tenant_id, features_dict["text_to_speech"].get("voice"), features_dict["text_to_speech"].get("language")
+            )
 
         for response in self._process_stream_response(tts_publisher=tts_publisher, trace_manager=trace_manager):
             while True:
diff --git a/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py b/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py
index c84f8ba3e4..8c9c26d36e 100644
--- a/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py
+++ b/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py
@@ -215,7 +215,9 @@ class EasyUIBasedGenerateTaskPipeline(BasedGenerateTaskPipeline, MessageCycleMan
             and text_to_speech_dict.get("autoPlay") == "enabled"
             and text_to_speech_dict.get("enabled")
         ):
-            publisher = AppGeneratorTTSPublisher(tenant_id, text_to_speech_dict.get("voice", None))
+            publisher = AppGeneratorTTSPublisher(
+                tenant_id, text_to_speech_dict.get("voice", None), text_to_speech_dict.get("language", None)
+            )
         for response in self._process_stream_response(publisher=publisher, trace_manager=trace_manager):
             while True:
                 audio_response = self._listen_audio_msg(publisher, task_id)
diff --git a/api/core/plugin/entities/plugin_daemon.py b/api/core/plugin/entities/plugin_daemon.py
index 7df8859bcf..1588cbc3c7 100644
--- a/api/core/plugin/entities/plugin_daemon.py
+++ b/api/core/plugin/entities/plugin_daemon.py
@@ -59,6 +59,7 @@ class PluginBasicBooleanResponse(BaseModel):
     """
 
     result: bool
+    credentials: dict | None = None
 
 
 class PluginModelSchemaEntity(BaseModel):
diff --git a/api/core/plugin/manager/model.py b/api/core/plugin/manager/model.py
index 2862cd9a25..5ebc0c2320 100644
--- a/api/core/plugin/manager/model.py
+++ b/api/core/plugin/manager/model.py
@@ -95,6 +95,9 @@ class PluginModelManager(BasePluginManager):
         )
 
         for resp in response:
+            if resp.credentials and isinstance(resp.credentials, dict):
+                credentials.update(resp.credentials)
+
             return resp.result
 
         return False
@@ -132,6 +135,9 @@ class PluginModelManager(BasePluginManager):
         )
 
         for resp in response:
+            if resp.credentials and isinstance(resp.credentials, dict):
+                credentials.update(resp.credentials)
+
             return resp.result
 
         return False
diff --git a/docker/docker-compose.middleware.yaml b/docker/docker-compose.middleware.yaml
index 4cbd2a776a..ebcf6c5c92 100644
--- a/docker/docker-compose.middleware.yaml
+++ b/docker/docker-compose.middleware.yaml
@@ -82,7 +82,7 @@ services:
       SERVER_KEY: ${PLUGIN_DAEMON_KEY:-lYkiYYT6owG+71oLerGzA7GXCgOT++6ovaezWAjpCjf+Sjc3ZtU+qUEi}
       MAX_PLUGIN_PACKAGE_SIZE: ${PLUGIN_MAX_PACKAGE_SIZE:-52428800}
       PPROF_ENABLED: ${PLUGIN_PPROF_ENABLED:-false}
-      DIFY_INNER_API_URL: ${PLUGIN_DIFY_INNER_API_URL:-http://api:5001}
+      DIFY_INNER_API_URL: ${PLUGIN_DIFY_INNER_API_URL:-http://host.docker.internal:5001}
       DIFY_INNER_API_KEY: ${PLUGIN_DIFY_INNER_API_KEY:-QaHbTe77CtuXmsfyhR7+vRjI/+XbV1AaFy691iy+kGDv2Jvy0/eAh8Y1}
       PLUGIN_REMOTE_INSTALLING_HOST: ${PLUGIN_DEBUGGING_HOST:-0.0.0.0}
       PLUGIN_REMOTE_INSTALLING_PORT: ${PLUGIN_DEBUGGING_PORT:-5003}